From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754153AbXIDLLY (ORCPT ); Tue, 4 Sep 2007 07:11:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753100AbXIDLLQ (ORCPT ); Tue, 4 Sep 2007 07:11:16 -0400 Received: from brick.kernel.dk ([87.55.233.238]:26559 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751565AbXIDLLQ (ORCPT ); Tue, 4 Sep 2007 07:11:16 -0400 Date: Tue, 4 Sep 2007 13:06:51 +0200 From: Jens Axboe To: Micah Gruber Cc: linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net, gregkh@suse.de Subject: Re: [PATCH] Fix a potential NULL pointer dereference in usbat_check_status() in drivers/usb/storage/shuttle_usbat.c Message-ID: <20070904110651.GB5126@kernel.dk> References: <46DD1661.4070500@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46DD1661.4070500@gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 04 2007, Micah Gruber wrote: > This patch fixes a potential null dereference bug where we dereference us before a null check. This patch simply moves the dereferencing after the null check. > > Signed-off-by: Micah Gruber Be careful with stuff like that, if you actually look at the code, a us == NULL doesn't seem to be possible (or usbat_flash_transport() would have oopsed before). -- Jens Axboe